James hartley



( No Model.) v

J. HARTLEY.

HEADER FOR STEAM BOILERS. N 350,361. Patented Oct. 5, 1886.

N PETERS. P'lwwl-ilhogmphen washingloll, D, C.

' boiler, and connected one with another, so as with myinvention and involving myimprove- UNITED STATES PATENT OFFICE."

JAMES HARTLEY, or

BROOKLYN, FEW YORK, ASSIGNOR TO THE PIONEER IRON WORKS, OF SAME PLACE.

HEADER FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 850,361, dated October 5, 1886.,

Application filed April 2, 1886. Serial No. 197,515. (No model.)

To all whom it may concern:

Be it known that I, JAMES HARTLEY, of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Headers for Steam-Boilers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention has relation to that class of devices known as headers for steam-boilers, which headers consist of metallic boxes, into which the tubes of a sectional steamboiler are secured at their ends, the headers being applied one to the other in such manner as to form portions of the end walls of the to provide for the desired communication between various tubes.

Among the objects of my present invention are the production of headers of such form that they may be easily and cheaply made and mounted one in contact with another, affording unimpeded access to the ends of the boiler tubes. and nipples for the purpose of expanding them or securing them in their respective seats; to make the closing-plates of such form and size that they may be easily and quickly adjusted in proper position within the headers or withdrawn therefrom, when required, making the joint or seat perfectly tight, and to secure other advantages, as will hereinafter appear.

To accomplish all of this my improvements involve certain new and useful peculiarities of construction, relative arrangements or combinations of parts, and principles of operation, as will be first fully explained,and then pointed out in the claim.

In the accompanying drawings,forming part of this specification, Figure l is a front elevation showing two headers arranged side by side, the same being constructed in accordance ments. Fig. 2 is a cross-section and partial elevation upona plane passing through line a: w of Fig. 1, and looking toward the left. Fig. 3 is a top or plan view of one of the headers turned, as in the position indicated at the right of Fig. 1. Fig. 4 is a front elevation similar to Fig. 1, but showing the headers arranged to' receive three boiler-tubes each, instead of five, as in Fig. 1, the principles being the same in both forms.

These views are deemed sufficient to -illustrate the character and scope of my invention, and in all the figures like letters of reference wherever they occur indicate corresponding parts.

A is the header or box, made of cast metal and of general triangular forn1that is, it is wider on one edge than -on the other, so as to receive a greater number of boiler-tubes in one row than in the other, and so that when applied'togethenthe longer edge of one in line, with the shorter edge of that adjacent,they will properly match together and form the closed end or wall of the boiler.

In order that the joints between the headers shall be sufficiently tight or close, each header 7o is provided with projecting webs on the front face, as at a a, extending beyond the walls of the box, of which the corners are generally rounded off, substantially as indicated by the dotted lines. r

The openings int-he back walls of the headers for the reception of the boiler-tubes are represented at b b. In Fig. 1,five such openings are shown-three in one row and two in the other-whereas in Fig. 4 only three are shown, one opposite the space between the other two. It is immaterial what the number of tubes may be; but it is advantageous to have one more in one row than inthe other, so that one will lie above or below the space between those in the adjacent. row, by which arrangement the heat and flames are better utilized than they would be if the tubes were placed in vertical rows. Five tubes will be found to be about as great a number as will be desirable for each header. The ends of the boiler-tubes are joined with the boxes in a steam-tight manner by expanding the tubes within the openings formed for them in the back of the header, and in order that the expansion may be easily and properly accomplished the tubes must be reached through the opening in the front face. This opening, as shown, is made amply large, and extends nearly to the side walls of the header, leaving only a narrow portion or flange all around, the flange serving as a seat for the covering-plate. This seat is faced or trued oft upon its inner surface by tools suitably adapted for the purpose. The covering-plate is also faced or trued off, so that the joint between it and its seat will be steanrtight.

B is the covering-plate, made in a single piece and preferably of cast metal. In outline it is, as shown, similar to the general form of the box-that is, wider at one edge than at IO the other--the corners being rounded off. The opening to be covered by this plate extends beyond the lines of the tube-holes in the back plate, so that the ends of the tubes can be reached without interference. XVith the pc- I 5 culiar form of plate and its seat the plate can beintroduced through the opening in the front wall without difficulty,thelarger or wider part being first inclined or canted and carried into the box far enough, so that the narrower parts will pass its seat. The plate is then brought back to its proper position against its seat and secured in place. In the size shown in Figs. 1 and 2, two securingbolts, as 0 G, are appliedto each. plate. These passthrough yokes,

as D D, which bridge the front opening, and bear upon the margins of the box, as plainly shown.

The nuts, as E E, lock the bolts and plates in place. In the smaller sizes a single bolt 0 and single yoke, as in Fig. 4, will be found sufficient.

The boxes are strengthened by interior ribs, substantially as indicated, and the narrow flange forming the seat for the cover is made 3 5 amply strong, so as to withstand all pressure brought to bear thereon from within.

Access to the ends of the tubes may be had at any time by removing the front plates or covers, an operation capable of rapid and easy 0 accomplishment.

The headers are connected by short tubes or nipples in the usual way, the same being seated in openings, as c 0, provided for them, and being accessible from the front when the covers are removed. The headers are placed to gether side by side and in horizontal rows in any desired numbers.

The peculiar form of the cover enables me to leave the front of the box practically entirely open, and yet locate the plate so that p the steam'pressure tends to force it tighter and tighter to its seat, whereas in boxes of former construct-ions, employing only a single removable cover, it is necessary to greatly contract the front opening, or else place the cover outside instead of inside the box.

The construction indicated is simple, convenient, and efficient, and well calculated to answer the purpose or object of the invention, as previously set forth.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is v The herein-described header for sectional boilers, the same consisting of a box wider 011 one edge than the other, having a single frontopening, through which the ends of all the tubes may be reached, and provided with a single plate or cover seated upon the interior of the front of the box, said cover arranged to be inserted through the front of the box and provided with a suitable yoke or yokes bearing upon the exterior of the box and a bolt or bolts, substantially as shown and explained.

In testimony that I claim the foregoing] have hereunto set my hand in the presence of two witnesses.

JAMES HARTLEY.

\Vitnesses:

JOHN B UcKLER, Won'rn: OSGOOD. 

